长江三角洲地区土壤环境质量与修复研究Ⅴ.废旧电子产品拆解场周边农田土壤含氯有机污染物残留特征
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国家自然科学基金重点项目(40432005)、国家重点基础研究发展规划项目(2002CB410809/10)和中国科学院知识创新工程重要方向项目(KZCX2-YW-404)、创新团队(CXTD-Z2005-4) 和中荷战略科学联盟项目(2006DFA91940)联合资助


Soil environment quality and remediation in yangtze river delta Ⅴ.composition and pollution of chlorinated organic compounds in farmland soils around used electronic device disassembling sites
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    摘要:

    对长江三角洲地区某废旧电容器拆解场地周边农田基本保护区表层水稻土中含氯有机化合物的组成及含量进行初步研究。结果表明,供试土壤中20种PCBs总含量在84.19~377.4 μg kg-1之间,平均含量为204.8 μg kg-1,其中二氯、三氯、四氯代同系物总和占总PCBs的73.7%~96.2%,存在着PCBs的外源输入。HCH的总含量为10.61~33.11 μg kg-1,DDT总含量为11.36~33.28 μg kg-1,残留水平较低,但β-HCH、γ-HCH、∑HCH和∑DDT的平均含量均高于荷兰土壤标准的目标值。此外,DDT与土壤有机碳呈显著负相关,而其他含氯有机化合物的含量并未呈现出与土壤有机碳的相关性.

    Abstract:

    Composition and contents of chlorinated organic compounds were investigated of soils around used electronic device disassembling sites in the Yangtze River Delta. Results show that the total of the 20 kinds of PCBs in the test soil was in the range of 84.19~377.4 μg kg-1, with an average va1ue of 204.8 μg kg-1, of which subchloride PCBs include Di-Cl, Tri-Cl and Tetra-Cl accounted for 73.7% ~96.2% of the ∑PCBs, indicating input of exogenous PCBs. The total of HCH was in the range of 10.61~33.11 μg kg-1, and the total of DDT in the range of 11.36~33.28 μg kg-1, being quite low in residue level. Most of the HCH and DDT in the soils have degraded, but the average contents of β-HCH, γ-HCH, ∑HCH and ∑DDT were all higher than the corresponding target values in the Dutch List. Moreover, correlation analysis shows that residual contents of DDT in the soils was negatively related to total organic carbon (TOC) content, but such relationship was not found between TOC and other detectable organochlorines.

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徐莉,骆永明,滕应,张雪莲,王家嘉,章海波,李振高,刘五星.长江三角洲地区土壤环境质量与修复研究Ⅴ.废旧电子产品拆解场周边农田土壤含氯有机污染物残留特征[J].土壤学报,2009,46(6):1013-1018. DOI:10.11766/trxb200711070607 Xu Li, Luo Yongming, Teng Ying, Zhang Xuelian, Wang Jiajia, Zhang Haibo, Li Zhengao, Liu Wuxing. Soil environment quality and remediation in yangtze river delta Ⅴ. composition and pollution of chlorinated organic compounds in farmland soils around used electronic device disassembling sites[J]. Acta Pedologica Sinica,2009,46(6):1013-1018.

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